diff options
Diffstat (limited to 'lib/exe')
| -rw-r--r-- | lib/exe/fetch.php | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/lib/exe/fetch.php b/lib/exe/fetch.php index d29ed9f64..92572b6ef 100644 --- a/lib/exe/fetch.php +++ b/lib/exe/fetch.php @@ -324,6 +324,7 @@ function resize_imageIM($ext,$from,$from_w,$from_h,$to,$to_w,$to_h){ * resize images using PHP's libGD support * * @author Andreas Gohr <andi@splitbrain.org> + * @author Sebastian Wienecke <s_wienecke@web.de> */ function resize_imageGD($ext,$from,$from_w,$from_h,$to,$to_w,$to_h){ global $conf; @@ -349,7 +350,7 @@ function resize_imageGD($ext,$from,$from_w,$from_h,$to,$to_w,$to_h){ } if(!$image) return false; - if(($conf['gdlib']>1) && function_exists("imagecreatetruecolor")){ + if(($conf['gdlib']>1) && function_exists("imagecreatetruecolor") && $ext != 'gif'){ $newimg = @imagecreatetruecolor ($to_w, $to_h); } if(!$newimg) $newimg = @imagecreate($to_w, $to_h); @@ -364,6 +365,25 @@ function resize_imageGD($ext,$from,$from_w,$from_h,$to,$to_w,$to_h){ imagesavealpha($newimg,true); } + //keep gif transparent color if possible + if($ext == 'gif' && function_exists('imagefill') && function_exists('imagecolorallocate')) { + if(function_exists('imagecolorsforindex') && function_exists('imagecolortransparent')) { + $transcolorindex = @imagecolortransparent($image); + if($transcolorindex >= 0 ) { //transparent color exists + $transcolor = @imagecolorsforindex($image, $transcolorindex); + $transcolorindex = @imagecolorallocate($newimg, $transcolor['red'], $transcolor['green'], $transcolor['blue']); + @imagefill($newimg, 0, 0, $transcolorindex); + @imagecolortransparent($newimg, $transcolorindex); + }else{ //filling with white + $whitecolorindex = @imagecolorallocate($newimg, 255, 255, 255); + @imagefill($newimg, 0, 0, $whitecolorindex); + } + }else{ //filling with white + $whitecolorindex = @imagecolorallocate($newimg, 255, 255, 255); + @imagefill($newimg, 0, 0, $whitecolorindex); + } + } + //try resampling first if(function_exists("imagecopyresampled")){ if(!@imagecopyresampled($newimg, $image, 0, 0, 0, 0, $to_w, $to_h, $from_w, $from_h)) { |